[英]Android custom alert dialog with rounded corners and transparent background
我使用onDraw
of LinearLayout
創建了一個帶圓角的自定義AlertDialog,如下所示,
public class RoundedLinearLayout extends LinearLayout {
private Paint drawPaint;
private Paint roundPaint;
private int mCornerRadius = 100;
private RectF bounds;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public RoundedLinearLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
onInit();
}
public RoundedLinearLayout(Context context, AttributeSet attrs) {
super(context, attrs);
onInit();
}
public RoundedLinearLayout(Context context) {
super(context);
onInit();
}
protected void onInit() {
drawPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
drawPaint.setColor(0xffffffff);
drawPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
roundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
roundPaint.setColor(0xffffffff);
setWillNotDraw(false);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
if (w != oldw && h != oldh) {
bounds = new RectF(0, 0, w, h);
}
}
@Override
protected void dispatchDraw(Canvas canvas) {
Bitmap bitmap = Bitmap.createBitmap((int) bounds.width(), (int) bounds.height(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
super.dispatchDraw(c);
BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(shader);
canvas.drawRoundRect(bounds, mCornerRadius, mCornerRadius, paint);
}
}
然后我通過getWindow()
添加透明度並設置window.alpha = 0.5f
。 生成的對話框是,
我想刪除那些角落的白色背景。 我在這里搜索了100個問題,沒有答案可以讓我得到完美的圓角警報對話框。 任何幫助,將不勝感激!
我用它,它對我有用:
ConfirmacionMensaje customDialog = new ConfirmacionMensaje(MainActivity.this);
customDialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
customDialog.show();
ConfirmacionMensaje來自Dialog
這是我對話框的xml:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
>
<solid android:color="#ffDB0000"/>
<corners
android:bottomLeftRadius="4dp"
android:bottomRightRadius="4dp"
android:topLeftRadius="4dp"
android:topRightRadius="4dp" />
</shape>
使用警報對話框使用簡單的對話框
LayoutInflater factory = LayoutInflater.from(getActivity());
AlertDialog alert = new AlertDialog.Builder(getActivity());
Dialog dialog = new Dialog(getActivity());
dialog.setContentView(your layout);
dialog.getWindow().setBackgroundDrawable(
new ColorDrawable(android.graphics.Color.TRANSPARENT));
用這個 :
dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
這是最簡單的解決方案,它的工作原理。
這對我有用
dialog.getWindow().setBackgroundDrawable(getResources().getDrawable(R.drawable.background_verification));
后台驗證是我的可繪制文件
這可以解決:
dialog.getWindow().setBackgroundDrawable(getResources().getDrawable(R.drawable.background_verification));
如果對話框是AlertDialog
或Dialog
的實例,請在代碼中添加以下內容:
myDialog
.getWindow()
.setBackgroundDrawable(new ColorDrawable(Color.argb(0,0,0,0)));
附注:擴展LinearLayout
以應用圓形框,在我看來這不是一個好習慣,您可以通過非常簡單的XML表示來做到這一點,在這種情況下,XML矩形形狀可以幫助更多:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
...
<corners
android:radius="3dp" />
...
</shape>
這對我來說是第一次
dialog.getWindow().setBackgroundDrawable(getResources().getDrawable(R.drawable.background_verification));
這里我從drawable文件夾獲取資源,background_verification是可繪制文件
使用dialog_corner在drawable文件夾中創建xml。
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <solid android:color="@color/main_background"/> <corners android:topLeftRadius="@dimen/margin_10" android:topRightRadius="@dimen/margin_10" android:bottomRightRadius="@dimen/margin_10" android:bottomLeftRadius="@dimen/margin_10" /> </shape>
2.布局輸出
機器人:背景= “@繪制/ dialog_corner”
3.在你的java文件中保留下面的代碼
View mView =LayoutInflater.from(mContext).inflate(R.layout.layout_pob,null);
alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
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